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2001. National Atlas of the United States. The Bathymetric Shaded Relief of North America map layer shows depth ranges using colors, with relief enhanced by shading. The image was derived fr... National Atlas of the United States.

2001. National Atlas of the United States. The Bathymetry of North America map layer shows depth ranges using colors. The image was derived from the National Geophysical Data Center's ETOPO2... National Atlas of the United States.

2001. National Atlas of the United States. This polygon shapefile portrays the hazardous waste generated, shipped, and received by state and other areas within the United States, Puerto Rico... National Atlas of the United States.